No problem with the game here. No workarounds done to play the game. One more vote to whitelist.
Sys info
For me the Multiplayer options (Join & Host) is not clickable.
@Holzhaus Is this working in your side? I am using proton 3.16 beta
edit: expect this, the game seems to work fine.
Not working on nvidia cards (analyzing protondb issues), screen isn't rendering - main menu doesnt show, but can randomly click with mouse on screen and eventually click on button and hear its sound
Hello @KocerPL, please add PROTON_LOG=1 %command% to the game's launch options and attach the generated $HOME/steam-$APPID.log to this issue report as a file. (Proton logs compress well if needed.) Also, please copy your system information from Steam (Steam -> Help -> System Information) and put it in a gist, then include a link to the gist in this issue report.
ok here is log @kisak-valve and system information
steam-232890.log
https://gist.github.com/KocerPL/b01bf2e88b198df8cb209de9255e9bbc
EDIT: In log it shows filter is unhandled, so i search some docs online and found that the unhandled filter is OR combination of D3DX_FILTER_TRIANGLE | D3DX_FILTER_DITHER
no 2d gui rendering after somehow clicking buttons in menu
Fixed problem by installing MESA drivers.
I'm using the Flatpak installation of Steam.
Host system information: